I used Google Translate for your question so pardon me for any mistakes.
1. Questions can be asked as a reply under the respective thread.
2. Unfortunately, I do not speak Russian, however, maybe I can ask someone if he/she can do a quick translation.
3. The potential participants will be informed by via Steam and also via Clancommunity. I will personally keep the participants updated in regard to the progress of the tournament.
4. I, The Marvelist, am the admin of this tournament. I must also say my gratitude to VM MorS who already helped me out a lot for this tournament.

I hope I answered your questions, if there are any more questions please ask!